Encyclopaedia
King Demoiselle
Chrysiptera rex
A stunning and hardy damselfish with metallic blue and orange hues, one of the most peaceful in its family.
- Family
- Pomacentridae
- Origin
- Pacifico occidentale: dalle isole Ryukyu, Taiwan e Filippine fino all'Australia settentrionale.
- Origin
- Tropical oceans and reefsExtra-Amazon South AmericaNorth AmericaSouth and Southeast AsiaEast AsiaAustralia, New Guinea, and Oceania
- Tank use
- Used in 0 tanks
Share
23 °C - 27 °C
8.1 - 8.4
Marine
Midwater
7 cm
Species description
Geographical Origin and Habitat: Western Pacific: Ryukyu Islands, Taiwan, Philippines, Indonesia, and northern Australia. Found in shallow surge zones of outer reefs from 1 to 20 meters deep.
Taxonomy and Morphology: Member of the family Pomacentridae. Oval, laterally compressed body. Reaches a maximum length of 7.0 cm.
Social Behavior: Semi-aggressive. Less territorial than most other damselfishes. Spends its time swimming near rock shelters, individually or in loose groups.
Coloration and Sexual Dimorphism: Bicolored pattern: head and upper back are brilliant electric metallic blue, while the lower body is orange-yellow to pinkish. No sexual dimorphism.
Care, breeding and tankmates
Aquarium Setup: Demands a tank of at least 80 liters with plenty of rockwork to establish territories. Moderate water flow.
Diet and Feeding: Omnivorous. Feeds on algae and zooplankton. Accepts flakes, pellets, frozen artemia, and mysis. Feed twice daily.
Water Quality: Keep reef parameters stable: temperature 23-27 °C, pH 8.1-8.4, salinity SG 1.020-1.025. Standard filtration.
Compatibility and Cohabitation: Best kept with other semi-aggressive species. May show territoriality to newly introduced fish. Completely reef safe.
Aquarium Breeding: Spawns in caves. The male guards and fans the adhesive eggs until hatching. Larvae are very small.
Risks and Diseases: Very hardy. High resistance to typical marine diseases, but can become aggressive if kept in small setups.
Fish profile
- Temperament
- Semi-aggressivo
- Diet
- Omnivoro
- Tank level
- Midwater
- Minimum group
- 1
- Adult size
- 7 cm
- Minimum tank volume
- 80 L
- GH
- n/a
- KH
- 8 dKH - 12 dKH
- TDS
- n/a
- Conductivity
- n/a
- Sex ratio
- Singolo, Coppia o Gruppo
- Feeding frequency
- 2 volte al giorno
- Bioload
- Low
- Flow
- Moderato
- Reproduction
- Depone uova adesive all'interno di ripari rocciosi o caverne. Il maschio custodisce e ventila attivamente la covata.
- Compatibility & tankmates
- Relativamente pacifica per essere una damigella. Può mostrare territorialità con pesci simili o coabitanti introdotti di recente.
Ecological Estimates & Biological Models
- Trophic level
- 2.5 ± 0.2 se
- Resilience
- High (less than 15 months)
- Phylogenetic uniqueness (PD50)
- 0.5
- Bayesian Length-Weight
- a = 0.01445, b = 3
Image gallery
Licensed images linked to the species or, when marked, to the closest representative taxon.
Related species
Other recommended species with similar care requirements and water parameters.
